Gas-engine.



D. R. BYRAIW.

GAS ENGINE.

APPLIOATION FILED MAR. 2a, 1913.

Patented June 2, 19M

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@Mom/Mio@ @ttor/mui (WPf-ac D. R. BYRAM.

GAS ENGINE.

A'PPLIGATION FILED MAB. 28, 1913.

Patented June 2, 1914.

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To all whom it may concern: Y

Be it known thatI I, DAVID R. BYRAM, a citizen of the United States, residing at Tupper Lake, in the county of'Franklin and `State of New York, have invented new and an engine of the class described which em-- bodies, in combination with a rotor and casing therefor, a cylinder and reciprocating piston, so associated with the rotor and its casing as to receive and compress the gas and force the same under compression into a plurality of combustion spaces or pockets in the periphery of the rotor, in condition for ignition and expansion.

A further object of the invention is to provide, in connection with the rotor and compressing piston arrangement above referred to, a valve or cut-od so arranged with 1 hollow cylindrical casing 9 which lies in relation to the rotor, the rotor casing and the compressed gas inlet, that the compressed gas is trapped behind the cut-od,

whereby when 'the gas is ignited and 'ex-V ploded it acts by expansion between said cut off and a rotor, so as to give an impulse to the rotor, a succession of such impulses being imparted to the rotor in each complete revolution thereof.

A further object of the invention is to provide suitable driving connections between the rotor "and compressing piston whereby said piston is automatically reciprocated and properly timed with respect to the rotation of the rotor, .for the purpose of forcing gas under compression into the combustion spaces of the rotor.

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts, as will be hereinafter more fully described, illustrated in the accompanyi drawings, and pointed out in the appen ed claim.

vln the drawings: Figure l is a front elevation of a rotary gas engine, embodying the present invention. Fig. 2 is a vertical longitudinal section taken about centrally of the motor. Fig. 3 is a vertical longitudinal section through the motor, showing the rotor in side elevation. Fig. l is a vertical diaxnetrical section through the motor.

Specification of Letters Patent.

part of the surface of the Patented June 2, 1914.

Application lecl March 28, 1913. Serial No. 757,416.

The engine contemplated in this invention comprises a rotor 1 which is of hollow cylindrical formation and supported by a central shaft 2 which extends beyond the opposite sides of the rotor and casing, and is mounted in bearings 3 on a suitable supporting frame, shown for convenience as embodying legs 4l, and a base or bed late 5.

The rotor is provided in the periphery or outer face thereof with a plurality of combustion chambers 6, each of which is substantially wedge-shaped in longitudinal section, vembodying a iioor or bottom 7 which is inclined with respect to the periphery i of the rotor, as clearly shown in Fig. 2, the

inclined door Z merging gradually into the .Y peripheral face of the rotor at one end, while at the other end it terminates in an impact l or pushing'face 8, against which the expanding gas acts in imparting an impulse to the rotor, aswill hereinafter appear.

rlhe rotor just described is inclosed in a close proximity 'to or in actual contact with the periphery of the rotor, so as to close in the combustion chambers 6, said casing being provided with a surrounding water jacket 10, through which water circulates for the purpose of cooling the engine.

ln order to effect a tight non-leaking joint between the rotor and the casing surrounding the same, the rotor is provided in the periphery thereof with a packing groove 11 extending entirely around each combustion chamber, and in said groove is arranged a yielding packing ring 12 which works in close contact with the inner surface of the rotor casing, thereby preventing the leakage of gas from one combustion chamber to another, during the operation of the rotor.

Associated with the rotor casing and secured tixedly thereto7 preferably above or at the top of the casing, is a gas compressing cylinder 13, in which is mounted a reciprocatory piston 14, the cylinder 13 being water-jacketed, as shown at 15, and provided with water inlets 16 at opposite sides, by which water is led into and `through the jacket 15, said jacket communicating at its 17 -at the bottom of the rotor casing, from,

whence it may be passed through a. cooling radiator and returned, after being cooled, to the inlets 16, in a manner well understood by those familiar with the art to which this invention appertains.

The piston rod 18 of the piston 14 extends upwardly and carries a cross arm 19, to the opposite extremities ot which are attached cam rods 20. These cam rods extend downwardly through oppositely arranged side casing plates 21, and are provided at their lower extremities with antifriction rollers 22 which travel in cam grooves formed in cam plates 23 having a xed relation to the rotor and driven thereby. Each of said cani grooves embodies a plurality ot outwardly extending runs 24, and a corresponding number of inwardly extending runs 25, so that in each revolution or" the rotor, the cam rods Q0 are moved in the direction of their length, so as to impart a reciprocatory movement to the piston 14, for the purp'ose of compressing gas which is admitted to the cylinder 13 through an inlet port 26.

A compressed gas inlet passage 2'? leads from the inner end of the cylinder 13 inwardly through the rotor casing, as shown in Fig. 2, and within said passage 27 is arranged a chech valve 28 facing in a direction which permits the gas to pass in the direction indicated, and which at the same time prevents any gas Jfrom returning to the cylinder 13 from the rotor. At one side of the cylinder 13, there is arranged a radially sliding cut-ofi 29 having an inclined inner edge or surface 30 which rides against the inclined floor 7 of each combustion chamber in the rotor. This cut-0H 29 is provided with an outwardly extending stein 31 which passes through a suitablevguide 32 and is surrounded by an expansion spring 33 which yieldingly holds the cut-olii' 29 inwardly against the inclined iioor of each combustion chamber successively.

Atopposite sides of the rotor, cooling fans 34 are arranged to revolve with the rotor, for the purpose of cooling the parts of the engine within the range thereof, the casing of the engine being provided at any desired number of points with openings 35 to allow theair to enter and leaye said casing under the propelling influence of the `fans 34.

From the foregoing' description, the operation of the engine will be apparent. vThe gas admitted to the cylinder 13 through the port 26 is compressed by the piston 14 and forced through the passage 27 past the check valve 28 successively into each combustion chamber or pocket in the rotor, and is trapped betweenI the cut-ofil 29 and the impact wall 8l of the Icombustion chamber.

A suitable ignition device, such as a spark plug, is locatedy at the point 36, and produces the spark necessary to ignite the com-V pressed gas so trapped, the result being that the gas expands between the cutoff 29 and the impacttace 8, andgives an impulse to the rotor in the direction indicated by the arrow in Fig. Q. The burnt gases are carried around by the con'ibustion chambers and finally escape through an exhaust port. 37 in the rotor casing.

lvvhat is claimed is:

In a rotary gas engine, a cylindrical rotor provided in the peripheral face thereof with a plurality of combustion chambers each embodying an inclined ioor which merges into the outer face of the rotor and an impact face substantially radial to the axis of movement of the rot-or, said rotor being also provided with cam grooves in its opposite sides,` a central shaft on which said rotor is supported,a cylindrical casing inclosing the rotor and lying in close proximity to the periphery thereof, a gas compressing cylinder having aiixed relation to the. rotor casing Vand communicating with the interior.

of said casing through a compressed gas passage, a reciprocatory piston mounted in said cylinder, a piston rod, a cross arm carried by said piston rod, and a pair of cam rods attached 'to said cross arm and each forked to comprise two branches which slide .JOHN A. CHALMERS. 

